A new seven-part series exploring the history of Ireland's most common surnames is set to air on Irish-language broadcaster TG4 on Sunday night. "Sloinne" (Irish for surname) provides a fascinating ...

The earliest known Irish surname is O’Clery (O Cleirigh); it’s the earliest known because it was written that the lord of Aidhne, Tigherneach Ua Cleirigh, died in County Galway back in the year 916 ...

The origins of some last names are pretty self-explanatory, whether it's Baker, Shepherd or even Rotten. But many surnames make no sense at all, at least not to the average Joe without a degree in Old ...

In most societies, surnames are passed on from father to son, just like the Y chromosome. This suggests that men who share the same surnames may have Y chromosomes that are related to one another. A ...

The surname O'Sullivan is the third most popular surname in all of Ireland. Therefore, it only makes sense that the name also has a prominent position in the most Irish city in Montana. Here are 10 ...